My PVR keeps freezing, I will press a button on the remote and it can take 30-60seconds for it to respond. I was told by tech support to switch it from the power bar to plugged directly into the outlet, which I have done, and to power it off when not being used. Doesnt this defeat the purpose of a PVR? I keep it on to record when I'm not home to watch tv. Is there an update or something for this that will fix it? Right now I have to unplug the power for a bit to get it to do anything.